2012120399 has 2 divisors, whose sum is σ = 2012120400. Its totient is φ = 2012120398.

The previous prime is 2012120393. The next prime is 2012120401. The reversal of 2012120399 is 9930212102.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2012120399 is a prime.

Together with 2012120401, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2012120393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1006060199 + 1006060200.

It is an arithmetic number, because the mean of its divisors is an integer number (1006060200).

Almost surely, 2^2012120399 is an apocalyptic number.

2012120399 is a deficient number, since it is larger than the sum of its proper divisors (1).

2012120399 is an equidigital number, since it uses as much as digits as its factorization.

2012120399 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 2012120399 is about 44856.6650454534. The cubic root of 2012120399 is about 1262.4610501201.

The spelling of 2012120399 in words is "two billion, twelve million, one hundred twenty thousand, three hundred ninety-nine".